CN116791419A - Lattice type pavement structure, repairing method and construction method - Google Patents

Abstract

The invention relates to the technical field of road traffic and provides a lattice pavement structure, a repair method and a construction method; a lattice pavement structure includes traffic lane slabs and a steel lattice structure; the top surface of the steel lattice structure is connected to The bottom surface of the traffic lane slab; the bottom surface of the steel lattice structure is used to connect the base layer; the steel lattice structure includes longitudinal supports and transverse supports; the longitudinal supports are arranged along the longitudinal direction of the road; the longitudinal supports are arranged along the transverse direction of the road Distributed at intervals; the transverse supports are arranged along the transverse direction of the road; the transverse supports are distributed at intervals along the longitudinal direction of the road. The use of this lattice pavement structure can solve the problem that the existing pavement structure is prone to corresponding random deformation when random settlement of the base layer occurs, thereby adversely affecting vehicle traffic.

Description

A lattice pavement structure, repair method and construction method

Technical field

The invention relates to the technical field of road traffic, in particular to a lattice pavement structure, repair method and construction method.

Background technique

Pavement structure is an important part of road engineering. Common pavement structures generally include surface layer, base layer and sub-base layer. The surface layer is the structural layer that directly bears the repeated effects of wheel loads and the influence of natural factors. Commonly used surface layer structures include asphalt concrete. and cement concrete; the base layer is located below the surface layer and is in close contact with the surface layer. It is mainly used to bear the load from the surface layer and transfer the load to the lower layer. Commonly used base layer materials include gravel, sand, and clay. etc.; the design and construction quality of the base and surface layers directly affect the service life, driving safety and operating efficiency of the pavement structure.

In actual application situations, such as plateau frozen soil environment, the base layer is prone to random settlement due to frost heaving and thawing of the frozen soil below; small-scale random settlement of the base layer can lead to cracking of the surface asphalt concrete, affecting the durability; large-scale occurrence of base layer Random settlement can lead to random deformation of the surface asphalt concrete and fracture of the cement concrete surface layer, which will adversely affect vehicle driving comfort and safety and reduce road traffic service levels.

Contents of the invention

The purpose of the present invention is to solve the problem that the existing pavement structure is prone to corresponding random deformation when random settlement of the base layer occurs, thereby adversely affecting vehicle traffic, and provides a lattice pavement structure, repair method and construction method.

In order to achieve the above objects, the technical solutions adopted by the present invention are:

A lattice pavement structure, including a traffic lane slab and a steel lattice structure; the top surface of the steel lattice structure is connected to the bottom surface of the traffic lane slab; the bottom surface of the steel lattice structure is used to connect the base layer; the steel lattice structure The lattice structure includes longitudinal supports and transverse supports; the longitudinal supports are arranged along the longitudinal direction of the road; the longitudinal supports are distributed along the transverse intervals of the road; the transverse supports are arranged along the transverse direction of the road; the transverse supports are distributed along the longitudinal intervals of the road. .

Traffic lane slabs can be made using various construction methods, such as on-site pouring or factory prefabrication; correspondingly, the steel lattice structure can also be assembled on site or factory prefabricated.

The specific size, quantity and distribution of longitudinal supports and transverse supports depend on the actual load conditions; the structure of the connection between the steel lattice structure and the traffic lane slab and base layer is determined according to the specific engineering construction site needs, and wing plates and bases can be used Or base plate in various ways.

The pavement structure of this plan is composed of steel lattice structure and traffic lane slabs, so it has good load-bearing capacity and stiffness. When irregular settlement of the base layer occurs, resulting in various potholes on the top surface of the base layer, this plan can rely on its own stiffness It resists small-size deformation caused by potholes on the top surface of the base layer, that is, filters small-size deformation, thereby making the deformation of the overall pavement structure due to irregular settlement of the base layer smoother, thereby reducing the adverse impact of irregular settlement of the base layer on vehicle traffic. ; At the same time, the steel lattice structure also has good processability and is easy to make into a combined structure. During construction, each component can be transported to the construction site for reassembly, thereby reducing the difficulty of transportation, and it is also convenient for prefabrication in the factory, and even for pavement structures. All components, such as traffic lane slabs and asphalt paving, are prefabricated together with the steel lattice structure, thereby reducing the assembly and pouring workload at the construction site. It is more suitable for environments where large-scale construction or maintenance is inconvenient, such as plateau environments.

The steel lattice structure also has good permeability. Compared with the existing heat-absorbing and heat-storing solid road structures, this solution is neither easy to store heat nor conduct heat conduction between the roadway slab and the base layer. If holes are opened in the side walls of the steel lattice structure, convection of air inside and outside the steel lattice structure can occur, and heat can be actively removed from the roadbed in a timely manner, thereby preventing the base layer from excessively absorbing and accumulating heat transferred from the roadway slab. , and cause diseases such as freeze-thaw diseases, and is more suitable for frozen soil areas where freeze-thaw diseases need to be avoided.

At the same time, the main steel lattice material of the pavement structure of this plan is steel, which can be recycled and reused when necessary, such as when the pavement structure needs to be replaced. It is an environmentally friendly material and is more conducive to low-carbon construction.

As a preferred solution of the present invention, the bottom surface of the steel lattice structure also includes a closed bottom plate; the steel lattice structure is also provided with a grouting repair system; the paddle repair system includes a horizontal conveying pipe and a vertical grouting pipe; The horizontal conveying pipe is arranged along the horizontal direction; at least one end of the horizontal conveying pipe extends out of the outer surface of the steel lattice structure; the vertical grouting pipes are spaced apart along the length direction of the horizontal conveying pipe; the vertical One end of the grouting pipe is connected to the horizontal conveying pipe, and the other end of the vertical grouting pipe passes through the closed bottom plate to the top of the base layer.

This plan adds a closed bottom plate to the bottom of the steel lattice structure. On the one hand, the longitudinal support, transverse support and closed bottom plate are combined into a steel box structure. Specifically, it is a steel box structure with an unenclosed top surface, so that it can bear the load together with the traffic lane slab. Moreover, the traffic lane slab is under pressure, the lateral support and longitudinal support of the steel box are under shear, and the closed bottom plate is under tension. The material utilization rate is high and the load-bearing capacity is strong, so that this solution can resist or adapt to a wider range of damage that occurs under the closed bottom plate. empty out;

On the other hand, when random settlement occurs in the base layer, the random settlement will form a closed hollow cavity under the closed bottom plate, which can be repaired through a grouting repair system.

The grouting repair system is installed in the steel lattice structure to avoid increasing the thickness of the pavement structure. When setting up the grouting repair system, care must be taken to avoid interference with the steel lattice structure. Interference can be avoided by, for example, opening holes in the steel lattice structure. At least one end of the horizontal conveying pipe extends from the steel lattice structure to facilitate grouting from the outside of the steel lattice structure to the vertical grouting pipe; when a through hole is provided on the longitudinal support, the horizontal conveying pipe can directly extend from the ventilation hole.

The horizontal conveying pipes and vertical grouting pipes can be evenly distributed on the closed bottom plate, or they can be distributed in areas prone to settlement according to the actual geological conditions; the specific size, shape and distribution of the horizontal conveying pipes are based on the layout of the vertical grouting pipes. It depends, for example, it may include multiple independent pipes arranged transversely along the road and spaced apart longitudinally along the road.

When random settlement occurs in the base layer, the random settlement will form a closed hollow cavity under the closed floor. Therefore, this plan introduces a grouting repair system. The grouting repair system includes horizontal conveying pipes distributed longitudinally along the road and along the length of the horizontal conveying pipes. The vertical grouting pipes distributed in different directions, and the slurry has a certain flow range, can realize grouting at any position on the base layer below the closed bottom plate; when a void cavity is detected under the closed bottom plate, the grouting can be started from the corresponding position. The horizontal conveying pipe injects grouting into the vertical grouting pipe at the decoupled cavity, so that the slurry can enter the decoupled cavity through the corresponding vertical grouting pipe to realize the repair of the base layer.

As a preferred solution of the present invention, the grouting repair system further includes a grouting control short pipe; the grouting control short pipe has a grouting inner cavity; the grouting inner cavity is along the axis of the grouting control short pipe At least one end of the direction is provided with a grouting inlet; the side wall of the grouting inner cavity is provided with a grouting outlet; the grouting control short pipe can move along the length direction of the horizontal conveying pipe to connect the grouting outlet Or stagger the vertical grouting pipe.

The sliding connection between the grouting control short pipe and the inner wall of the horizontal conveying pipe can take many forms, such as making the outer wall of the grouting control short pipe and the inner wall of the grouting pipe clearance fit, or introducing a traveling mechanism such as a pulley.

The grouting repair system of this plan further introduces the grouting control short pipe on the basis of the horizontal conveying pipe and the vertical grouting pipe; when a voided cavity is detected under the closed bottom plate, the grouting control system can be installed at the level of the voided area. A grouting control short pipe is installed in the conveying pipe, and the grouting control short pipe is moved along the horizontal conveying pipe to the vertical grouting pipe at the void, so that only the vertical grouting pipe at the void can be grouted. It will not enter other vertical grouting pipes, nor will it remain in the horizontal conveying pipe; therefore, if settlement occurs again at the other vertical grouting pipes on the same horizontal conveying pipe, the grouting control short pipe can still be set at this horizontal conveying pipe pipe and move it to the corresponding vertical grouting pipe, and then grout again. Unlike the solution of directly injecting grouting into the horizontal conveying pipe, the horizontal conveying pipe will not be caused by the slurry remaining in the horizontal conveying pipe or other vertical grouting pipes. Or other vertical grouting pipes are blocked and cannot be used again.

As a preferred solution of the present invention, the horizontal conveying pipe is provided with sealing gaskets on both sides of the vertical grouting pipe along its length direction; the sealing gasket is used to seal the outer wall of the grouting control short pipe and the A seal is formed between the inner walls of the horizontal conveying pipe.

The sealing gasket and the grouting control short pipe can form a seal on the horizontal conveying pipe, that is, when the grouting control short pipe moves to one of the vertical grouting pipes and the grouting outlet is aligned with the vertical grouting pipe, the The sealing gaskets on both sides of the vertical grouting pipe can form seals with the corresponding positions of the grouting control short pipe, so that when grouting is injected into the grouting control short pipe, even if the grout overflows from the grouting outlet, this part of the grout cannot reach it. A horizontal duct segment located outside the two sealing gaskets.

This solution can reduce the grout that overflows from the grouting outlet and flows to other parts of the horizontal conveying pipe when grouting is injected into the grouting control short pipe, and at the same time prevents this part of grout from sliding on the grouting control short pipe relative to the horizontal conveying pipe after solidification. cause obstruction.

As a preferred solution of the present invention, the short grouting control pipe is provided with at least one variable diameter sealing plate; the diameter of the variable diameter sealing plate is adjustable; the horizontal conveying pipe is provided at the vertical grouting pipe There is a sealing plate slot corresponding to the variable-diameter sealing plate; the diameter of the variable-diameter sealing plate can be adjusted to embed or disengage from the sealing plate slot.

The variable diameter sealing plate can use various products that can change the diameter, such as elastic expansion sleeves or drum-shaped tooth expansion sleeves.

This solution can lock the relative position of the grouting control short pipe and the horizontal conveying pipe through the combination of the variable diameter sealing plate and the sealing plate slot; and when it is necessary to move the grouting control short pipe, the variable diameter sealing plate can be adjusted smaller diameter, so that the grouting control short pipe can be freely moved; the relative position of the grouting control short pipe and the horizontal conveying pipe is locked, which can prevent the grouting control short pipe from being impacted by the grout when grouting the grouting control short pipe The lower relative horizontal conveying pipe deviates, resulting in the grouting outlet and the vertical grouting pipe being staggered, making it impossible to grout normally in the vertical grouting pipe; on the other hand, the grouting control short pipe is locked according to the position of the sealing plate slot. The position allows the grouting control short pipe to stay more accurately on the vertical grouting pipe, thereby aligning the grouting outlet with the vertical grouting pipe, which is conducive to smoother grouting into the vertical grouting pipe.

As a preferred solution of the present invention, the variable-diameter sealing plate includes a control lock; rotating the control lock can adjust the diameter of the variable-diameter sealing plate; a guide rod is detachably connected to the control lock; rotating the control lock can adjust the diameter of the variable-diameter sealing plate. The guide rod can drive the control lock head to rotate and thereby adjust the diameter of the variable diameter sealing plate; pushing the guide rod can drive the control lock head to move and thereby drive the grouting control short pipe to move.

Depending on the selection or quantity of variable diameter sealing plates, multiple guide rods may be required.

This solution uses a variable-diameter sealing plate with a control lock, and the control lock can be detachably connected to a guide rod, so that the guide rod can be used to push the grouting control short pipe to a designated position on the horizontal conveying pipe, and rotate the guide rod Increase the diameter of the variable-diameter sealing plate so that the variable-diameter sealing plate is connected to the sealing plate slot, thereby locking the position of the grouting control short pipe.

As a preferred solution of the present invention, the horizontal conveying pipes are distributed at longitudinal intervals along the road; the distance between two adjacent horizontal conveying pipes along the longitudinal direction of the road is DL; 0.2m≤DL≤0.5m.

This plan recommends one of the specific layout methods of horizontal conveying pipes, that is, the longitudinal spacing along the road, and recommends the spacing between two horizontal conveying pipes adjacent longitudinally along the road; this spacing can ensure that no occurrence of The settlement of the base between two horizontal conveying pipes cannot be repaired due to the excessive spacing between the horizontal conveying pipes; and it can also be ensured that there will not be too many horizontal conveying pipes due to the small spacing between the horizontal conveying pipes and they will be closed accordingly. There are also too many through holes that need to be installed on the bottom plate, which makes the construction of the grouting repair system difficult and costly.

As a preferred embodiment of the present invention, a sealing cover is detachably connected to the opening of the horizontal conveying pipe.

The detachable connection between the sealing cover and the horizontal delivery pipe can be achieved in a variety of ways, such as threaded connection or interference fit; the sealing cover can be made of various materials, such as rubber or metal.

This solution can prevent foreign matter from entering the horizontal conveying pipe when the horizontal conveying pipe is not in use, thereby keeping the interior of the horizontal conveying pipe clean and smooth.

As a preferred embodiment of the present invention, the closed bottom plate includes a plurality of bottom steel plates distributed longitudinally along the road.

The connection method of adjacent bottom steel plates refers to the existing technology, and can adopt methods such as welding and bolting.

This solution, that is, the closed floor is made up of multiple bottom steel plates distributed longitudinally along the road, which can reduce the difficulty of manufacturing and transporting the closed floor.

As a preferred solution of the present invention, the bottom steel plate is provided with first latching teeth and second latching teeth on both sides along the road longitudinal direction; the first latching teeth can be assembled with the second latching teeth.

The first latching teeth and the second latching teeth can be in various shapes, such as rectangular teeth or trapezoidal teeth, as long as they can facilitate the splicing of two adjacent bottom steel plates; the first latching teeth and the second latching teeth all correspond along the bottom steel plate The length of the side is determined according to actual needs, and can be set full-length or not; the first latching teeth can be combined with the second latching teeth, that is, when several bottom steel plates are placed side by side and in the same direction, the first and second latching teeth of the previous bottom steel plate The second latching teeth or the first latching teeth can be assembled with the first latching teeth or the second latching teeth of the next bottom steel plate.

The first and second latching teeth of this solution can help quickly join two adjacent bottom steel plates; and depending on the type of latching teeth selected, this solution can also limit the relative displacement of the two adjacent bottom steel plates; if a rectangular shape is selected teeth, this solution can limit the relative displacement of two adjacent bottom steel plates along the road's lateral direction; if trapezoidal teeth are selected, with the long side of the trapezoidal teeth facing the outside of the bottom steel plate, this solution can limit the horizontal displacement of two adjacent bottom steel plates along the horizontal direction. All relative displacements in the direction.

As a preferred solution of the present invention, a bottom plate connecting plate is provided at the joint between two adjacent bottom steel plates; the bottom plate connecting plate is bolted to the bottom steel plates on both sides.

The specific size and arrangement of the base plate connecting plate are determined according to the actual load and the specific conditions of the construction site.

This solution can further enhance the connection strength of adjacent bottom steel plates.

As a preferred solution of the present invention, the top surface of the closed bottom plate is provided with bottom stiffening ribs.

The specific size, number and arrangement of bottom stiffeners are determined according to the actual load conditions.

This solution can increase the load-bearing capacity and stiffness of the closed bottom plate, thereby improving the load-bearing capacity and stiffness of the steel box structure composed of the closed bottom plate, longitudinal supports and transverse supports, thereby improving the load-bearing capacity and stiffness of the steel box structure and the traffic lane slab. The load-bearing capacity and stiffness of the overall structure make this solution more resistant to random settlement.

As a preferred solution of the present invention, the traffic lane slab is a concrete member; a steel roof plate is provided between the traffic lane slab and the steel lattice structure; the steel roof plate and the traffic lane slab are combined into a steel-concrete structure.

The way the steel roof plate and the driveway plate form a steel-concrete structure refers to the existing technology, and can be connected through shear connectors such as bolts to form a steel-concrete structure.

In this plan, a steel roof plate is installed between the steel lattice structure and the traffic lane plate, and the steel roof plate and the traffic lane plate are combined into a steel-concrete structure, so that the steel roof plate and the traffic lane plate can bear the load from the vehicle, and the steel roof plate is under tension , the traffic lane slab is under pressure, has strong load-bearing capacity and high material utilization.

As a preferred solution of the present invention, the steel top plate includes multiple top steel plates; two adjacent top steel plates are welded and connected; the welding seams of the steel top plate are staggered with the longitudinal supports and transverse supports.

The specific design of the welding seams of the steel roof plate meets the corresponding requirements of the steel structure design and processing specifications.

This plan staggers the joints of the steel roof plate with the longitudinal and transverse supports, that is, avoiding the overlap of the joints of the steel roof plate with the longitudinal and transverse supports, in order to comply with the specification requirements.

As a preferred solution of the present invention, both ends of the steel lattice structure in the transverse direction of the road do not exceed the base layer; the longitudinal supports located at the leftmost end and the rightmost end in the transverse direction of the road are at least one meter away from the corresponding edge of the base layer. .

In this plan, the distance between the left side of the lateral panel located at the leftmost end along the road and the right side of the lateral panel located at the rightmost end is narrower than the width of the base layer along the road, and the distance between the left side of the lateral panel located at the far left along the road is narrower than the width of the base layer along the road. The left side of the support shall be at least one meter from the left edge of the base, and the right side of the rightmost longitudinal support located transversely along the road shall be at least one meter from the right edge of the base.

This solution prevents the edge of the longitudinal support from coinciding with the edge of the base layer, and prevents the longitudinal support from directly transmitting the load to the weak zone at the edge of the base layer.

As a preferred solution of the present invention, the longitudinal support and/or the transverse support include a flange plate; the flange plate on the longitudinal support is provided at the top and/or bottom of the longitudinal support; the transverse support The flange plates on the supports are provided at the top and/or bottom of the transverse supports.

The specific width and thickness of the flange plate are determined according to the actual load; if there is a need to set up shear connectors on the flange plate, the arrangement of the shear connectors also needs to be considered; for steel lattice structures, the flange plate can only It can be set along the longitudinal support, or only along the transverse support, or it can be set up along both the longitudinal support and the transverse support; for the longitudinal support, the flange plate can be set at the top of the longitudinal support, or at the bottom of the longitudinal support, or at the longitudinal support Both the top and the bottom of the support are provided; for the lateral support, the flange plate can be provided at the top of the lateral support, the bottom of the lateral support, or both the top and the bottom of the lateral support.

When the flange plate is installed on the top of the longitudinal support and/or the transverse support, this solution can increase the area of the top of the steel lattice structure, thereby increasing the connection area between the steel lattice structure and the carriageway plate, thereby making the steel lattice structure and the carriageway The connection of the plates is more reliable; at the same time, this solution can also facilitate the installation of shear connectors such as bolts on the top surface of the steel lattice structure, thereby further enhancing the connection strength between the steel lattice structure and the carriageway slab, making the steel lattice structure and the carriageway slab The connection is more reliable.

When the flange plate is installed at the bottom of the longitudinal support and/or the transverse support, this solution can increase the area of the bottom of the steel lattice structure, thereby increasing the connection area between the steel lattice structure and the structure below it, such as the base layer, so that the steel lattice structure can be connected to the bottom of the steel lattice structure. Structural connections are more reliable.

As a preferred embodiment of the present invention, the longitudinal support is provided with ventilation holes for ventilation.

The ventilation holes can be in various shapes, such as array honeycomb or oblong; the specific number and arrangement of the ventilation holes are determined according to the ventilation needs, and should also meet the structural strength and stiffness requirements of the longitudinal support.

This solution is provided with vent holes for ventilation on the longitudinal supports, which is conducive to gas exchange on both sides of the longitudinal supports to form hot and cold air convection, thus promoting heat dissipation of the base layer. It can avoid heat accumulation in the base layer and is suitable for areas that need to avoid freezing and thawing diseases. Permafrost areas.

As a preferred embodiment of the present invention, a leveling layer is also provided between the steel lattice structure and the base layer.

The specific material and thickness of the leveling layer refer to the existing technology, and materials such as mortar and concrete can be used.

This solution is used to ensure close contact between the steel lattice structure and the base layer, while also preventing random settlement of the base layer from directly affecting the steel lattice structure, thereby reducing the corresponding deformation of the steel lattice structure when random settlement of the base layer occurs, thereby reducing the deformation of the traffic lane slab; At the same time, the leveling layer can also reduce the corrosion caused by the rise of capillary water in the base layer to the steel lattice structure, thereby extending the service life of the steel lattice structure.

The leveling layer can also be used as a reinforcement layer for the base layer to improve the load-bearing capacity and stability of the base layer, thereby further improving the overall stability and durability of the pavement structure.

As a preferred solution of the present invention, the traffic lane slab includes a concrete layer; a shear-resistant connector is provided on the top of the steel lattice structure; and the steel lattice structure is connected to the concrete layer through the shear-resistant connector.

The shear connectors refer to the existing technology and may be in the form of bolts or other shear connectors.

This solution can ensure the connection strength and stiffness of the steel lattice structure and the carriageway plate, thereby reducing the possibility that the connection between the carriageway plate and the steel lattice structure will fail under the action of external loads and even lead to the separation or relative slippage of the carriageway plate and the steel lattice structure. possible.

As a preferred embodiment of the present invention, the roadway slab further includes asphalt pavement.

The specific thickness and material selection of asphalt paving are determined according to actual needs.

Asphalt paving can be laid on site or prefabricated together with roadway slabs, which reduces the workload of on-site construction and helps achieve higher construction quality for asphalt paving.

The driveway slab of this solution contains asphalt pavement, which can improve the flatness of the driveway slab, help achieve higher driving comfort, absorb impact, and reduce traffic noise.

A pavement structure repair method, applied to a lattice pavement structure of the present invention, includes the following steps:

A. Inject grouting into the corresponding vertical grouting pipe at the empty position through the horizontal conveying pipe until the predetermined grouting requirement is reached.

The method of detecting the void under the closed bottom plate refers to the existing technology, and methods such as vibration testing, probe method, seismic exploration method, etc. can be used.

In step A, you can only inject grouting into the vertical grouting pipe corresponding to the empty position. For example, insert a soft grouting pipe into the horizontal conveying pipe, and bend the soft grouting pipe at the corresponding position. The grouting pipe allows the soft grouting pipe to enter the vertical grouting pipe at the corresponding position, so that the hollow area can be grouted through the vertical grouting pipe at the corresponding position; the horizontal grouting pipe at the corresponding position can also be directly grouted. The conveying pipe is grouted, but if this repair method is adopted, the grout will remain in the horizontal conveying pipe and other vertical grouting pipes and block the horizontal conveying pipe and other vertical grouting pipes after solidification, causing the corresponding horizontal conveying Pipes and vertical grout pipes cannot be reused.

In step A, the specific value of the scheduled grouting amount is determined according to the actual settlement; but it should be a value that allows the grout to fill the empty cavity without overflowing from the vertical grouting pipe; if the pavement structure is synchronized When the deflection is large, the upper pavement structure can be mechanically lifted or replaced to the design elevation before grouting, and then repaired.

This plan is aimed at the situation where the lattice pavement structure contains a grouting repair system; when the base layer randomly settles and a void cavity is generated under the closed bottom plate, grouting is injected into the vertical grouting pipe at the void cavity. After the hollow cavity is solidified, the hollow cavity can be eliminated and the base layer can be repaired.

As a preferred solution of the present invention, when the lattice pavement structure also includes a grouting control short pipe, step A includes the following steps:

A1. Move the grouting control short pipe along the horizontal conveying pipe to the vertical grouting pipe corresponding to the empty position, and align the grouting outlet with the vertical grouting pipe;

A2. Fix the position of the grouting control short pipe; inject grouting into the grouting inlet until the predetermined grouting requirement is reached;

A3. Release the fixation of the short grouting control pipe; move the short grouting control pipe out of the horizontal conveying pipe.

In step A1, various methods can be used to push the grouting device, such as pushing the grouting device through a rod-shaped part, or pulling the grouting device using a rod-shaped or rope-shaped part. If the control lock of the grouting device is detachably connected to a guide rod, the guide rod can be used to push the grouting device along the horizontal conveying pipe;

Determining whether the grouting outlet is aligned with the vertical grouting pipe can be achieved in various ways, such as installing a sensor on the grouting device to confirm the current position of the grouting device; or by measuring the extension of parts that push or pull the grouting device. Calculate the position of the grouting device by measuring the length of the part that enters the horizontal conveying pipe. If a guide rod is used to push the grouting device, you can calculate the length of the part of the guide rod that extends into the inner part of the horizontal conveying pipe by measuring the length of the outer part of the guide rod. , and then indirectly obtain the position of the grouting device relative to the horizontal conveying pipe.

In step A2, the method of fixing the grouting device depends on the specific structure of the grouting device; if the grouting device itself does not have any special limiting structure, the grouting can be limited by inserting limiting parts into the horizontal conveying pipe. The position of the device, such as inserting support rods from both ends of the horizontal conveying pipe to fix the grouting device; if a special limiting structure is provided on the grouting device, the grouting device can be fixed in a corresponding manner.

In step A3, the method of unfastening the grouting device depends on the specific structure of the grouting device; if a support rod is inserted from both ends of the horizontal conveying pipe to fix the grouting device, it is necessary to fix the grouting device in this step. Remove the support rod; if there is a special limiting structure on the grouting device, it can be released in the corresponding way; various methods can be used to move the grouting device out of the horizontal conveying pipe, such as pushing the grouting device through rod-shaped parts , or use rod-shaped or rope-shaped parts to pull the grouting device. If a guide rod is detachably connected to the control lock of the grouting device, the guide rod can be used to push the grouting device along the horizontal conveying pipe.

In step A3, when grouting into the vertical grouting pipe, this plan should inject grouting into the vertical grouting pipe through the grouting inlet; it can be done by connecting the grouting pipe to the vertical grouting pipe in advance. For grouting in the grouting pipe, you can also move the grouting control short pipe into place and fix it, and then extend the grouting pipe into the grouting inlet for grouting.

The pavement structure corresponding to the steel lattice structure of this solution also includes a grouting control short pipe, which is used to accurately control the grouting position through the grouting control short pipe, so that the grout can only enter the vertical position aligned with the grouting outlet through the grouting inlet. To the grouting pipe, it will not enter the vertical grouting pipes at other locations, nor will it enter the horizontal conveying pipes located on both sides of the grouting control short pipe, so that there will be no vertical grouting pipes that do not require grouting. Blockage will not cause blockage of the horizontal conveying pipe; if settlement occurs again at the other vertical grouting pipes on the same horizontal conveying pipe, the grouting control short pipe can still be set in the horizontal conveying pipe and moved to the corresponding vertical pressure The grouting pipe is then re-grouted so that the grouting repair system can be reused.

As a preferred solution of the present invention, when the grouting control short pipe also includes a variable diameter sealing plate, and a corresponding sealing plate slot is provided in the horizontal conveying pipe,

Step A2 also includes the following steps:

i. Increase the diameter of the variable-diameter sealing plate to connect with the sealing plate slot; when a guide rod is detachably connected to the control lock, rotate the guide rod to increase the diameter of the variable-diameter sealing plate ;

Step A3 also contains the following steps:

ii. Reduce the diameter of the variable-diameter sealing plate to separate it from the sealing plate slot; when the guide rod is detachably connected to the control lock, rotate the guide rod to reduce the diameter of the variable-diameter sealing plate. The diameter of the sealing plate.

In step i, the method of adjusting the diameter of the variable-diameter sealing plate depends on the specific structure of the variable-diameter sealing plate; if an expansion sleeve is used for the variable-diameter sealing plate, the diameter of the variable-diameter sealing plate can be adjusted by rotating the expansion sleeve bolt. ; If the variable-diameter sealing plate includes a control lock and a guide rod, the diameter of the variable-diameter sealing plate can be adjusted by rotating the guide rod.

In step ii, the method of adjusting the diameter of the variable diameter sealing plate is the same as that in step i, except that in this step, the diameter of the variable diameter sealing plate needs to be adjusted in the decreasing direction so that the variable diameter sealing plate can Separate from the sealing plate slot to release the relative fixation of the grouting control short pipe and the horizontal delivery pipe.

This solution is for a grouting repair system that includes a grouting control short pipe with a variable diameter sealing plate, and a corresponding closed slot is provided in the horizontal conveying pipe, which is used to fix the grouting control short pipe relative to the horizontal conveying pipe. Or release the fixation of the grouting control short pipe relative to the horizontal conveying pipe. Compared with other temporary structural fixing methods, such as inserting support rods from both ends of the horizontal conveying pipe to fix the grouting device, this solution is simpler and more reliable.

A pavement structure construction method, applied to a lattice pavement structure of the present invention, includes the following steps:

S1. Prefabricated steel lattice structure; the width of the steel lattice structure matches the width of the road; the length of the steel lattice structure is smaller than the length of the road; prefabricated corresponding traffic lane slabs; connect the steel lattice structure and the traffic lane plate;

S2. Arrange the steel lattice structure and the traffic lane slab continuously along the road longitudinal direction; connect the two adjacent steel lattice structures; and pour a wet joint between the two adjacent traffic lane slabs.

In step S1, the specific length of the prefabricated steel lattice structure is determined according to the specific conditions of the factory construction site, such as transportation conditions or hoisting conditions; the size of the prefabricated driveway slab corresponds to the size of the steel lattice structure, that is, the adjacent steel lattice structure After the lattice structures are connected to each other, there should be enough joints for pouring wet joints between the corresponding two adjacent traffic lane slabs; if the traffic lane slabs include asphalt paving, you can choose whether to install them here based on the actual conditions at the construction site. Premade together in the steps.

The specific connection method between the steel lattice structure and the carriageway slab refers to the existing technology, and a connection method such as setting shear nails on the top surface of the steel lattice structure can be used.

In step S2, the connection method between two adjacent steel lattice structures is determined according to the specific structure of the steel lattice structure, and methods such as welding or bolting can be used. When there are more than two steel lattice structures along the longitudinal direction of the road, all the steel lattice structures can be connected to each other first, and then the wet joints can be poured uniformly; the wet joints can also be poured together after each two adjacent steel lattice structures are connected. .

In the construction method of this plan, the steel lattice structure and traffic lane slabs are prefabricated components and connected before being transported to the construction site. After being transported to the construction site and positioned, it is only necessary to connect the adjacent steel lattice structures and Just pour a wet joint between two adjacent traffic lane slabs, which can reduce the workload on the construction site and improve construction efficiency. It is more suitable for construction sites with poor construction regulations, such as plateaus or areas.

As a preferred embodiment of the present invention, step S1 also includes the following steps:

S1-1. Set a rubber waterstop strip on the top surface of the steel lattice structure; apply epoxy mortar between the steel lattice structure and the traffic lane slab.

The specific arrangement and cross-sectional size of the rubber waterstop strips on the steel lattice structure are determined according to the specific structure and actual needs of the steel lattice structure; if there is a flange plate on the steel lattice structure, the rubber waterstop strips can be placed along both sides of the flange plate. Side edge setting; the specific thickness of epoxy mortar is determined according to actual needs.

In this plan, rubber water-stop strips are installed on the steel lattice structure, and epoxy mortar is applied between the steel lattice structure and the traffic lane slab; when the traffic lane slab is connected to the steel lattice structure, the rubber water-stop strips will seal under the weight of the traffic lane slab. The water strips can be tightly pressed between the traffic lane slab and the steel lattice structure, and the upper and lower sides of the epoxy mortar are in full contact with the traffic lane slab and the steel lattice structure respectively, thereby achieving sealing between the steel lattice structure and the traffic lane slab.

In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are:

1. The pavement structure of this plan is composed of steel lattice structure and traffic lane slabs, so it has good load-bearing capacity and stiffness. When irregular settlement of the base layer occurs and various potholes are produced on the top surface of the base layer, this plan can rely on its own The stiffness resists small-size deformations caused by potholes on the top surface of the base layer, that is, filters small-size deformations, thereby making the deformation of the overall pavement structure due to irregular settlement of the base layer smoother, thereby reducing the impact of irregular settlement of the base layer on vehicle traffic. Adverse effects; at the same time, the steel lattice structure also has good processability and is easy to make into a combined structure. During construction, each component can be transported to the construction site for reassembly, thereby reducing the difficulty of transportation, and it is also convenient to prefabricate in the factory, and even All components of the pavement structure, such as traffic lane slabs and asphalt paving, are all prefabricated together with the steel lattice structure, thereby reducing the assembly and pouring workload at the construction site. It is more suitable for environments where large-scale construction or maintenance is inconvenient, such as plateau environments. .

2. The steel lattice structure of this plan also has good permeability. Compared with the existing heat-absorbing and heat-storing solid road structures, this plan is not easy to store heat, and it is also more difficult to carry out traffic lane slabs and base layers. If holes are opened on the side walls of the steel lattice structure, the air inside and outside the steel lattice structure can be convection to actively remove heat from the roadbed in a timely manner, thereby preventing the base layer from absorbing and accumulating excessive heat from the roadway. The heat transferred from the plate can cause diseases such as freeze-thaw diseases. It is more suitable for frozen soil areas where freeze-thaw diseases need to be avoided.

3. The main steel lattice material of the pavement structure of this plan is steel, which can be recycled and reused when necessary, such as when the pavement structure needs to be replaced. It is an environmentally friendly material and is more conducive to low-carbon construction.

4. The repair method of this plan is aimed at the situation where the lattice pavement structure contains a grouting repair system; when the base layer randomly settles and a void cavity is generated under the closed bottom plate, grouting is injected into the vertical grouting pipe at the void cavity. , when the slurry enters the hollow cavity and solidifies, the hollow cavity can be eliminated and the base layer can be repaired.

5. When the steel lattice pavement structure of this plan also includes a grouting control short pipe, the grouting position can be accurately controlled through the grouting control short pipe, so that the grout can only enter the area opposite the grouting outlet through the grouting inlet. The accurate vertical grouting pipe will not enter the vertical grouting pipes at other locations, nor will it enter the horizontal conveying pipes located on both sides of the grouting control short pipe, thus causing no vertical grouting that does not require grouting. If the grouting pipe is blocked, it will not cause the horizontal conveying pipe to be blocked; if the remaining vertical grouting pipes on the same horizontal conveying pipe settle again, the grouting control short pipe can still be set in the horizontal conveying pipe and moved to the corresponding position. The vertical grouting pipe is then grouted again, allowing the grouting repair system to be reused.

6. In the construction method of this plan, the steel lattice structure and the traffic lane slab are both prefabricated components and connected before being transported to the construction site. After being transported to the construction site and positioned, it is only necessary to connect the adjacent steel lattice structures. , and just pour a wet joint between two adjacent traffic lane slabs, which can reduce the workload on the construction site and improve the construction efficiency. It is more suitable for construction sites with poor construction regulations, such as plateaus or areas.

Description of the drawings

Figure 1 is a schematic partial cross-sectional view of the three-dimensional structure of a lattice pavement structure according to the present invention;

Figure 2 is a schematic partial cross-sectional view of the three-dimensional structure of a lattice pavement structure according to the present invention;

Figure 3 is a partial three-dimensional structural diagram of the steel lattice structure;

Figure 4 is a partial three-dimensional structural diagram of the steel lattice where the grouting repair system is installed and the lateral support state is hidden;

Figure 5 is a partial three-dimensional structural diagram of a lattice pavement structure of the present invention at the joints of the closed bottom plate;

Figure 6 is a top view of the closed bottom plate;

Figure 7 is a schematic three-dimensional structural diagram of the combined structure of a horizontal conveying pipe and a vertical grouting pipe;

Figure 8 is a partial three-dimensional structural cross-sectional view of the connection between the horizontal conveying pipe and the vertical grouting pipe;

Figure 9 is a partial cross-sectional view of the three-dimensional structure of the grouting control short pipe;

Figure 10 is a schematic three-dimensional structural cross-sectional view of the grouting control short pipe installed on the horizontal conveying pipe and connected to the guide rod;

Figure 11 is a schematic three-dimensional structural cross-sectional view of the grouting control short pipe installed on the horizontal conveying pipe and connected to the guide rod;

Figure 12 is a partial cross-sectional schematic diagram of the three-dimensional structure of a lattice pavement structure in Embodiment 5;

Figure 13 is a schematic side view of a lattice pavement structure in Embodiment 5;

Figure 14 is a schematic partial cross-sectional view of the three-dimensional structure of a lattice pavement structure in Embodiment 5;

Figure 15 is a schematic diagram of the deformation effect of a conventional asphalt road structure caused by random settlement of the base layer;

Figure 16 is a schematic diagram of the deformation effect of a lattice pavement structure of the present invention caused by random settlement of the base layer;

Icon: 1-base; 2-roadway slab; 3-steel lattice structure; 4-grouting repair system; 5-leveling layer; 6-conventional asphalt road structure; 7-grouting pipe; 21-concrete layer; 22 -Asphalt paving; 31-Longitudinal support; 32-Transverse support; 33-Flange plate; 34-Steel roof; 36-Enclosed bottom plate; 321-Ventilation hole; 361-Grouting through hole; 362-Bottom stiffener; 363 -The first latching tooth; 364-the second latching tooth; 365-bottom plate connecting plate; 41-horizontal conveying pipe; 42-vertical grouting pipe; 43-grouting control short pipe; 44-reducing sealing plate; 45- Guide rod; 411-sealing plate slot; 431-grouting inner cavity; 432-grouting outlet; 433-grouting inlet; 441-control lock.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings.

In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and are not intended to limit the present invention.

Example 1

As shown in Figures 1 to 5, this embodiment adopts a lattice type pavement structure, which includes a steel lattice structure 3; the top surface of the steel lattice structure 3 is connected to the bottom surface of the traffic lane slab 2; the bottom surface of the steel lattice structure 3 Used to connect the base layer 1; the steel lattice structure 3 includes a longitudinal support 31 and a transverse support 32; the panels of the longitudinal support 31 and the transverse support 32 are along the vertical direction; the longitudinal support 31 is set along the longitudinal direction of the road; the longitudinal support 31 is arranged along the longitudinal direction of the road. Distributed at horizontal intervals; the transverse supports 32 are arranged along the transverse direction of the road; the transverse supports 32 are distributed at longitudinal intervals along the road.

Specifically, the traffic lane slab 2 includes a concrete layer 21 and an asphalt pavement 22, wherein the bottom surface of the concrete layer 21 is connected to the top surface of the steel grid structure 3 through shear connectors, such as bolts; the asphalt pavement 22 is provided on the concrete layer 21. top surface.

The top and/or bottom of the steel lattice structure 3 is provided with a flange plate 33. The flange plate 33 provided on the top of the steel lattice structure 3 is used to increase the contact area between the top surface of the steel lattice structure 3 and the bottom surface of the concrete layer 21, and is also convenient Shear-resistant connectors are provided. The flange plate 33 provided at the bottom of the steel lattice structure 3 is used to increase the contact area between the bottom surface of the steel lattice structure 3 and the base layer 1. The flange plate 33 can also increase the overall resistance of the pavement structure of this embodiment. Bending capacity and stiffness.

The steel lattice structure 3 can be arranged with the same width as the base layer 1, but for this embodiment, the longitudinal supports 31 located at the leftmost end and the rightmost end respectively along the road are at least one meter away from the corresponding edge of the base layer 1 to prevent the longitudinal supports 31 from directly transferring the load. Passed to the weak zone at the edge of base layer 1.

According to the actual conditions of the construction site, the traffic lane slab 2 can be cast on the top of the steel lattice structure 3, but it should be prefabricated together with the steel lattice structure 3, so that the construction can be completed by assembling and processing the joints on site, and can avoid disassembly and assembly. The cast-in-place formwork can reduce the on-site pouring and maintenance work, thereby reducing the construction period, and is more suitable for construction sites with harsh working environments where pouring and maintenance are inconvenient, such as plateau areas.

When the overall prefabricated traffic lane slab 2 and steel lattice structure 3 are used, the specific length of each section of the prefabricated traffic lane slab 2 and steel lattice structure 3 is determined according to the actual situation and transportation conditions of the construction site; adjacent prefabricated traffic lane slabs 2 and steel lattice structures 3 The connection method between the track slab 2 and the steel lattice structure 3 can refer to the existing technology, and can be connected by wet joints and threaded connections respectively. Specifically, for this embodiment, a number of U-shaped longitudinal bars extend out from both ends of the roadway plate 2 along the longitudinal direction of the road, and the U-shaped longitudinal bars are distributed transversely along the road; when two adjacent roadway plates 2 are installed on When specifying the position, the U-shaped longitudinal ribs of the two traffic lane slabs 2 are aligned along the transverse direction of the road and staggered along the vertical direction of the road. Insert the positioning pins along the vertical direction into the U-shaped longitudinal ribs to separate the two adjacent ones. The traffic lane slabs 2 are relatively fixed; the transverse supports 32 of the steel lattice structure 3 are also provided with shear nails at the joints corresponding to the two adjacent lane slabs 2, and the joints of the two adjacent lane slabs 2 are completed on site. After the reinforcement, concrete and asphalt are poured in-situ at the joints of two adjacent traffic lane slabs 2, thereby connecting the two adjacent traffic lane slabs 2 into a whole.

A leveling layer 5 can also be provided between the steel lattice structure 3 and the base layer 1 so that the bottom surface of the steel lattice structure 3 can fully contact the base layer 1 to avoid the unevenness of the base layer 1 causing the bottom surface of the steel lattice structure 3 and the base layer 1 to be incompatible. For this embodiment, the leveling layer 5 is made of concrete.

As shown in Figure 5, the longitudinal support 31 is also provided with a vent hole 321 for ventilation; the shape of the vent hole 321 in this embodiment is an oblong hole, but it can also be in other shapes according to actual needs, such as circular or trapezoidal. , array honeycomb shape. The ventilation holes 321 are spaced longitudinally along the road.

The pavement structure of this embodiment, as shown in Figure 16, when random settlement of the base layer 1 occurs, can resist deformation through the stiffness of the steel lattice structure 3 itself, thereby transforming random potholes on the top of the base layer 1 into smoother deformations, avoiding The traffic lane slab 2 undergoes deformation corresponding to the random settlement of the base layer 1 like the conventional asphalt road structure 6 in Figure 15, thereby reducing the adverse effects of the random settlement of the base layer 1 on the comfort and safety of vehicle driving.

Example 2

As shown in Figures 1 to 5, on the basis of Embodiment 1, a closed bottom plate 36 is provided between the steel lattice structure 3 and the base layer 1; a grouting repair system 4 is also provided in the steel lattice structure 3; as shown in Figure 7 As shown, the paddle repair system includes a horizontal conveying pipe 41 and a vertical grouting pipe 42; the horizontal conveying pipe 41 is arranged along the horizontal direction; at least one end of the horizontal conveying pipe 41 extends out of the steel lattice 3; the vertical grouting pipe 42 is conveyed along the horizontal direction. The length direction of the pipes 41 is spaced apart; one end of the vertical grouting pipe 42 is connected to the horizontal conveying pipe 41, and the other end of the vertical grouting pipe 42 passes through the closed bottom plate 36 and is connected to the top surface of the base layer 1;

Specifically, the closed bottom plate 36 is provided with a grouting through hole 361; the vertical grouting pipe 42 passes through the grouting through hole 361 and is connected to the top surface of the base layer 1; between the grouting through hole 361 and the vertical grouting pipe 42 Sealing process to prevent grout from overflowing from the gap between the grouting through hole 361 and the vertical grouting pipe 42.

As shown in Figure 4, the horizontal conveying pipe 41 is a straight pipe arranged transversely along the road; both ends of the horizontal conveying pipe 41 extend from the corresponding longitudinal supports 31 to facilitate the grouting operation; the horizontal conveying pipe 41 extends out of the longitudinal supports Both ends of 31 are removably connected with sealing covers to protect the inside of the horizontal conveying pipe 41 when the horizontal conveying pipe 41 is not in use; the sealing cover is threadedly connected to the end of the horizontal conveying pipe 41; each horizontal conveying pipe 41 is threaded along the road. Longitudinal spacing distribution; the distance between two adjacent horizontal conveying pipes 41 along the longitudinal direction of the road is DL; 0.2m≤DL≤1.2m.

As for the closed bottom plate 36, this embodiment is a spliced structure. The closed bottom plate 36 is made up of multiple bottom steel plates spliced together along the longitudinal direction of the road; and as shown in Figure 6, the bottom steel plate is provided with first teeth on both sides along the longitudinal direction of the road. 363 and the second latching teeth 364; the first latching teeth 363 can be assembled with the second latching teeth 364, thereby facilitating the rapid assembly and fixation of adjacent bottom steel plates; specifically, the shape of the first latching teeth 363 is a dovetail shape, and the dovetail The long side of the shape is located outside the bottom steel plate; the shape of the second latching teeth 364 corresponds to the first latching teeth 363, so that when the first latching teeth 363 and the second latching teeth 364 are assembled, they can limit two adjacent bottom steel plates. The freedom of movement along the lateral direction of the road can also limit the freedom of movement of two adjacent bottom steel plates along the longitudinal direction of the road, thereby preventing the two adjacent bottom steel plates from accidentally separating under external forces.

In addition to the first latching teeth 363 and the second latching teeth 364, as shown in Figures 2 and 5, this embodiment is also provided with a bottom plate connecting plate 365 at the joint of two adjacent bottom steel plates; the bottom plate connecting plates 365 are respectively It is bolted to the bottom steel plates on both sides; depending on actual needs and loads, the bottom plate connecting plate 365 can also be welded to the bottom steel plate, or the bottom plate connecting plate 365 may not be provided.

Bottom stiffening ribs 362 can also be provided on the top surface of the closed bottom plate 36; in this embodiment, a number of bottom stiffening ribs 362 along the longitudinal direction of the road are welded on the top surface of the closed bottom plate 36; the setting of the bottom stiffening ribs 362 is determined according to the actual load conditions. If the whole combination of the steel lattice structure 3, the closed bottom plate 36 and the traffic lane plate 2 has sufficient strength, the bottom stiffener 362 does not need to be provided.

Example 3

On the basis of Embodiment 2, the grouting repair system 4 also includes a grouting control short pipe 43; the grouting control short pipe 43 can be slidably connected to the inner wall of the horizontal conveying pipe 41; as shown in Figure 9, the grouting control short pipe 43 It has a grouting inner cavity 431; a grouting inlet 433 is provided at one end of the grouting inner cavity 431 along the length direction of the horizontal conveying pipe 41; a grouting outlet 432 is provided at one side of the grouting inner cavity 431 close to the closed bottom plate 36; grouting The control short pipe 43 moves along the length direction of the horizontal conveying pipe 41 so that the grouting outlet 432 can communicate with the vertical grouting pipe 42 .

Specifically, as shown in Figure 9, the main body of the grouting control short pipe 43 is a tubular member that can fit with the inner wall of the horizontal conveying pipe 41; both ends of the grouting control short pipe 43 are provided with variable diameter sealing plates 44. The diameter of the sealing plate 44 is adjustable; as shown in Figure 8, the horizontal conveying pipe 41 is provided with a sealing plate slot 411 corresponding to the variable diameter sealing plate 44 at the vertical grouting pipe 42; as shown in Figures 10 and 11 , when the grouting control short pipe 43 moves to the vertical grouting pipe 42 and the grouting outlet 432 is connected to the vertical grouting pipe 42 , the variable diameter sealing plate 44 can increase in diameter and be connected to the sealing plate slot 411 .

For this embodiment, the variable-diameter sealing plate 44 includes a control lock 441; the rotating control lock 441 can adjust the diameter of the variable-diameter sealing plate 44; the control lock 441 is detachably connected to a guide rod 45; the rotating guide rod 45 can drive The control lock 441 rotates to adjust the diameter of the variable diameter sealing plate 44; pushing the guide rod 45 can drive the control lock 441 to move and then drive the grouting control short pipe 43 to move; specifically, due to the variable diameter seal close to the grouting inlet 433 There is an escape hole corresponding to the grouting inlet 433 in the center of the plate 44. Therefore, as shown in Figure 9, the control lock 441 away from the grouting inlet 433 is provided with an internal hexagonal groove, and the corresponding guide rod 45 is provided with a corresponding internal hexagonal groove. The external hexagonal structure is provided with an external hexagonal structure to be detachably connected to it; the control lock 441 near the grouting inlet 433 is provided with an external hexagonal structure, and the corresponding guide rod 45 is provided with a corresponding internal hexagonal groove to be detachably connected to it; respectively corresponding to The guide rods 45 of the outer hexagonal structure and the inner hexagonal groove can be two independent guide rods 45, or they can be the same guide rod 45 but with a replaceable connection structure.

A sealing gasket is also provided in the sealing plate slot 411, and when the variable diameter sealing plate 44 is connected to the sealing plate slot 411, the sealing gasket can form a seal between the outer wall of the grouting control short pipe 43 and the inner wall of the horizontal conveying pipe 41 ; Specifically, for this embodiment, since both ends of the grouting control short pipe 43 are provided with variable diameter sealing plates 44, after the variable diameter sealing plates 44 and the corresponding sealing gaskets form a seal, the grouting control short pipe is then 43, even if the grout overflows from the vertical grouting pipe 42, it cannot enter the horizontal conveying pipe 41 located outside the two sealing gaskets, thereby not causing blockage of the horizontal conveying pipe 41.

Example 4

A pavement structure repair method, applied to any lattice pavement structure in Embodiments 2 to 3, includes the following steps:

A0. Detect the empty position below the closed bottom plate 36;

The method of detecting the void under the closed bottom plate 36 refers to the existing technology, and methods such as vibration testing method, probe method, seismic exploration method, etc. can be used.

A. Inject grouting into the vertical grouting pipe 42 corresponding to the empty position until the predetermined grouting amount is reached;

In this step, the soft grouting pipe 7 can be inserted into the horizontal conveying pipe 41 and bent at the vertical grouting pipe 42 at the corresponding position, so that the soft grouting pipe 7 can be Entering the vertical grouting pipe 42 at the corresponding position, the hollow area can be grouted through the vertical grouting pipe 42 at the corresponding position; grouting can also be performed directly on the horizontal conveying pipe 41 at the corresponding position. However, if this repair method is adopted, the slurry will remain in the horizontal conveying pipe 41 and block the horizontal conveying pipe 41 after solidification, making the horizontal conveying pipe 41 unable to continue to be used.

If the lattice pavement structure also includes the grouting control short pipe 43, step A may also include the following steps:

A1. Move the grouting control short pipe 43 along the horizontal conveying pipe 41 to the vertical grouting pipe 42 corresponding to the emptying position, and align the grouting outlet 432 with the vertical grouting pipe 42;

Various methods can be used to push the grouting control short pipe 43, such as pushing the grouting control short pipe 43 through a rod-shaped part, or using a rod-shaped or rope-shaped part to pull the grouting control short pipe 43. If the guide rod 45 is detachably connected to the control lock 441 of the short grouting control pipe 43, the guide rod 45 can be used to push the short grouting control pipe 43 along the horizontal conveying pipe 41;

Determining whether the grouting outlet 432 is aligned with the vertical grouting pipe 42 can be achieved in various ways, such as installing a sensor on the grouting control short pipe 43 to confirm the current position of the grouting control short pipe 43; it can also be driven by measurement. Or pull the part of the grouting control short pipe 43 to extend into the horizontal conveying pipe 41 to calculate the position of the grouting control short pipe 43. If the guide rod 45 is used to push the grouting control short pipe 43, the guide rod 45 can be measured. The length of the outer part of the horizontal conveying pipe 41 is calculated by calculating the length of the guide rod 45 extending into the inner part of the horizontal conveying pipe 41, thereby indirectly obtaining the position of the grouting control short pipe 43 relative to the horizontal conveying pipe 41.

A2. Fix the position of the grouting control short pipe 43; inject grouting into the grouting inlet 433 until the predetermined grouting amount is reached;

The method of fixing the grouting control short pipe 43 depends on the specific structure of the grouting control short pipe 43; if the grouting control short pipe 43 itself is not provided with any special limiting structure, the limiting structure can be inserted into the horizontal conveying pipe 41. Limit the position of the grouting control short pipe 43 in the form of parts, such as inserting support rods from both ends of the horizontal conveying pipe 41 to fix the grouting control short pipe 43;

If the grouting control short pipe 43 is provided with a special limiting structure, the grouting control short pipe 43 can be fixed in a corresponding manner; for example, when the grouting control short pipe 43 is provided with a variable diameter sealing plate 44, and the horizontal conveying pipe 41 is provided with a corresponding sealing plate slot 411, then when it is confirmed that the grouting outlet 432 of the grouting control short pipe 43 is aligned with the corresponding vertical grouting pipe 42, the variable diameter sealing plate 44 and the sealing plate slot 411 are During alignment, the diameter of the variable-diameter sealing plate 44 can be increased so that the variable-diameter sealing plate 44 extends into the sealing plate slot 411 to limit the position of the grouting control short pipe 43;

The diameter adjustment method of the variable diameter sealing plate 44 depends on the specific structure of the variable diameter sealing plate 44; for example, for the variable diameter sealing plate 44 in Embodiment 3, the outer hexagonal structure or the inner hexagonal groove of the guide rod 45 can be combined with the control The corresponding internal hexagonal grooves or external hexagonal structures on the lock head 441 are docked, so that the diameter of the variable diameter sealing plate 44 is adjusted by rotating the guide rod 45 and the variable diameter sealing plate 44 is extended into the sealing plate slot 411, and then fixed. The position of the grouting control short pipe 43;

When grouting into the vertical grouting pipe 42, if the grouting control short pipe 43 is included, it is advisable to inject grouting into the vertical grouting pipe 42 through the grouting inlet 433; this can be done in advance as shown in Figure 11 The vertical grouting pipe 42 is connected to the grouting pipe 7 to inject grouting into the vertical grouting pipe 42. Alternatively, the grouting control short pipe 43 can be moved into position and fixed, and then the grouting pipe 7 can be extended into the grouting pipe 42. into the grout inlet 433 for grouting.

The specific value of the predetermined grouting amount is determined according to the actual settlement; but it should be a value that allows the grout to fill the empty cavity without overflowing from the vertical grouting pipe 42; if the pavement structure synchronously deflects significantly When, before grouting, the upper pavement structure can be mechanically lifted or replaced to the design elevation, and then the repair operation of this embodiment can be performed; or the vertical grouting pipe 42 can be made vertically grouting by setting a sealing switch on the vertical grouting pipe 42. The slurry from the pipe 42 to the upper part of the base layer 1 forms a certain pressure, thereby lifting the pavement structure to a certain extent.

A3. Unfasten the grouting control short pipe 43; move the grouting control short pipe 43 out of the horizontal conveying pipe 41.

The method of unfastening the grouting control short pipe 43 depends on the specific structure of the grouting control short pipe 43; if a support rod is inserted from both ends of the horizontal conveying pipe 41 to fix the grouting control short pipe 43, The support rod needs to be removed in this step; if a special limiting structure is provided on the grouting control short pipe 43, the fixation can be released in a corresponding manner; for example, for the variable diameter sealing plate 44 in Embodiment 3, the guide can be The outer hexagonal structure or inner hexagonal groove of the rod 45 is docked with the corresponding inner hexagonal groove or outer hexagonal structure on the control lock head 441, so that the diameter of the variable diameter sealing plate 44 is adjusted by rotating the guide rod 45 and the variable diameter sealing plate 44 is adjusted. The plate 44 withdraws from the sealing plate slot 411, thereby releasing the fixation of the grouting control short pipe 43;

Various methods can be used to move the grouting control short pipe 43 out of the horizontal conveying pipe 41, such as pushing the grouting control short pipe 43 through a rod-shaped part, or using a rod-shaped or rope-shaped part to pull the grouting control short pipe 43. If the guide rod 45 is detachably connected to the control lock 441 of the short grouting control pipe 43, the guide rod 45 can be used to push the short grouting control pipe 43 along the horizontal conveying pipe 41.

Example 5

As shown in Figures 12 to 14, based on Embodiment 1, a steel roof plate 34 is provided between the steel lattice structure 3 and the traffic lane slab 2. The steel roof plate 34 is connected to the concrete layer of the traffic lane slab 2 through shear connectors. 21 to form a steel-concrete structure with the traffic lane plate 2; a flange plate 33 is provided at the bottom of the steel lattice structure 3.

Top stiffeners can also be provided on the bottom surface of the steel roof plate 34; in this embodiment, a number of top stiffeners along the longitudinal direction of the road are welded to the bottom surface of the steel roof plate 34; the setting of the top stiffeners is determined according to the actual load conditions, such as steel lattice structure 3 , the steel roof plate 34 and the traffic lane plate 2 are combined as a whole to have sufficient strength, then the top stiffeners do not need to be provided.

Specifically, the steel roof plate 34 is welded by multiple top steel plates; and the joints of the steel roof plate 34 are staggered with the longitudinal support 31 and the transverse support 32; All use welding connections.

Since this embodiment does not provide a closed bottom plate 36, if it is necessary to provide a leveling layer 5 between the steel lattice structure 3 and the base layer 1, the leveling layer 5 can only be provided along the flange plate 33 at the bottom of the steel lattice structure 3, so that Form a grid-like foundation as shown in Figure 12.

Example 6

A construction method of a road structure, applied to any of the lattice pavement structures in Embodiments 1 to 3 and 5, includes the following steps:

S1. Prefabricated steel lattice structure 3; the width of the steel lattice structure 3 matches the width of the road; the length of the steel lattice structure 3 is less than the length of the road; prefabricated corresponding traffic lane slabs 2; connect the steel lattice structure 3 and the traffic lane slab 2;

Specifically, for this embodiment, shear nails are also arranged on the top surface of the steel lattice structure 3 to connect it to the traffic lane plate 2 through the shear nails; the wet joints of the steel lattice structure 3 corresponding to the traffic lane plate 2 are also provided on the upper surface There are corresponding shear nails; when the flange plate 33 is provided on the top surface of the steel lattice structure 3, the shear nails are arranged on the top surface of the flange plate 33;

A number of U-shaped longitudinal bars extend out from both longitudinal ends of the traffic lane slab 2; when the traffic lane slab 2 has an asphalt pavement 22, the asphalt pavement 22 is also prefabricated together;

When connecting the steel lattice 3 and the traffic lane slab 2, the following steps are also included:

S1-1. Set a rubber waterstop strip on the top surface of the steel lattice structure 3; apply epoxy mortar between the steel lattice structure 3 and the traffic lane slab 2;

Specifically, the rubber waterstop strips in this embodiment adopt EPDM rubber waterstop strips; when the flange plate 33 is provided on the upper part of the steel lattice structure 3, the rubber waterstop strips are pasted along both sides of the flange plate 33 On the upper surface of the flange plate 33; the thickness of the epoxy mortar is 10~15mm;

S2. Arrange the steel lattice structure 3 and the traffic lane slab 2 continuously along the road longitudinal direction; connect the two adjacent steel lattice structures 3; pour between the two adjacent traffic lane slabs 2 wet seams;

The connection method between two adjacent steel lattice structures 3 depends on the specific structure of the steel lattice structure 3, and can adopt methods such as welding or bolting; specifically, when the steel lattice structure 3 has a closed bottom plate 36, and the closed bottom plate 36 is provided with first latching teeth 363 and second latching teeth 364. The steel lattice structures 3 can be quickly assembled through the first latching teeth 363 and the second latching teeth 364 of two adjacent steel lattice structures 3, and then the steel lattice structures 3 can be quickly assembled. Two adjacent steel lattice structures 3 are welded or bolted to achieve reliable fixation; when the closed bottom plates 36 of the two adjacent steel lattice structures 3 are welded or bolted, the joints of the two adjacent steel lattice structures 3 can also be connected. A bottom plate connecting plate 365 is provided;

Two adjacent traffic lane slabs 2 can first overlap each other through U-shaped longitudinal bars, and positioning pins can be inserted into the U-shaped longitudinal bars to achieve preliminary connection. Then the reinforcement at the joints of the two adjacent traffic lane slabs 2 can be completed on-site. , and pour concrete and asphalt in-situ at the joints of two adjacent traffic lane slabs 2, thereby connecting the two adjacent traffic lane slabs 2 into a whole;

When pouring the wet joint, one more concrete beam can also be poured at the corresponding joint in the steel lattice structure 3 along the wet joint, thereby further increasing the load-bearing capacity and stiffness of the pavement structure of this embodiment; the steel bars of the concrete beam can be Installed on site and connected with studs and carriageway slabs 2 to form reinforced concrete beams.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention. Inside.

Claims (18)

1. A lattice pavement structure, including a traffic lane slab (2), characterized in that it also includes a steel lattice structure (3); the top surface of the steel lattice structure (3) is connected to the traffic lane slab ( 2); the bottom surface of the steel lattice structure (3) is used to connect the base layer (1); the steel lattice structure (3) includes longitudinal supports (31) and transverse supports (32); the longitudinal supports (31 ) are arranged along the longitudinal direction of the road; the longitudinal supports (31) are distributed along the transverse intervals of the road; the transverse supports (32) are arranged along the transverse direction of the road; the transverse supports (32) are distributed along the longitudinal intervals of the road. 2. A lattice pavement structure according to claim 1, characterized in that the bottom surface of the steel lattice structure (3) also includes a closed bottom plate (36); the steel lattice structure (3) is also provided with a Grouting repair system (4); the paddle repair system includes a horizontal conveying pipe (41) and a vertical grouting pipe (42); the horizontal conveying pipe (41) is arranged along the horizontal direction; the horizontal conveying pipe (41) 41) At least one end extends out of the outer surface of the steel lattice structure (3); the vertical grouting pipes (42) are spaced apart along the length of the horizontal conveying pipe (41); the vertical grouting pipes (42) One end is connected to the horizontal conveying pipe (41), and the other end of the vertical grouting pipe (42) passes through the closed bottom plate (36) to the top of the base layer (1). 3. A lattice pavement structure according to claim 2, characterized in that the grouting repair system (4) also includes a grouting control short pipe (43); the grouting control short pipe (43 ) has a grouting inner cavity (431); the grouting inner cavity (431) is provided with a grouting inlet (433) along at least one end of the axial direction of the grouting control short pipe (43); The side wall of the cavity (431) is provided with a grouting outlet (432); the grouting control short pipe (43) can move along the length direction of the horizontal conveying pipe (41) to connect the grouting outlet (432) Or stagger the vertical grouting pipe (42). 4. A lattice pavement structure according to claim 3, characterized in that the horizontal conveying pipe (41) is provided with grooves on both sides of the vertical grouting pipe (42) along its length direction. Sealing gasket; the sealing gasket is used to form a seal between the outer wall of the grouting control short pipe (43) and the inner wall of the horizontal delivery pipe (41). 5. A lattice pavement structure according to claim 3, characterized in that the grouting control short pipe (43) is provided with at least one variable diameter sealing plate (44); the variable diameter sealing plate The diameter of (44) is adjustable; the horizontal conveying pipe (41) is provided with a sealing plate slot (411) corresponding to the variable diameter sealing plate (44) at the vertical grouting pipe (42); The diameter of the variable-diameter sealing plate (44) can be adjusted to fit into or disengage from the sealing plate slot (411). 6. A lattice pavement structure according to claim 5, characterized in that the variable diameter sealing plate (44) includes a control lock (441); rotating the control lock (441) can adjust the The diameter of the variable diameter sealing plate (44); the control lock head (441) is detachably connected to a guide rod (45); rotating the guide rod (45) can drive the control lock head (441) to rotate and thereby Adjust the diameter of the variable diameter sealing plate (44); pushing the guide rod (45) can drive the control lock head (441) to move and thereby drive the grouting control short pipe (43) to move. 7. A lattice pavement structure according to claim 2, characterized in that the closed bottom plate (36) includes a plurality of bottom steel plates distributed longitudinally along the road. 8. A lattice pavement structure according to claim 7, characterized in that the bottom steel plate is provided with first latching teeth (363) and second latching teeth (364) on both sides along the longitudinal direction of the road; The first latching teeth (363) can be assembled with the second latching teeth (364). 9. A lattice pavement structure according to claim 7, characterized in that a bottom plate connecting plate (365) is provided at the joint of two adjacent bottom steel plates; the bottom plate connecting plate (365) ) are bolted to the bottom steel plates on both sides. 10. A lattice pavement structure according to claim 1, characterized in that the traffic lane slab (2) is a concrete component; the traffic lane slab (2) and the steel lattice structure (3) A steel roof plate (34) is provided between them; The steel roof plate (34) and the traffic lane plate (2) are combined into a steel-concrete structure. 11. A lattice pavement structure according to any one of claims 1 to 10, characterized in that both ends of the steel lattice structure (3) along the road transverse direction do not exceed the base layer (1) ; The longitudinal supports (31) located at the leftmost end and the rightmost end respectively along the road are at least one meter away from the corresponding edge of the base layer (1). 12. A lattice pavement structure according to any one of claims 1 to 10, characterized in that the longitudinal supports (31) and/or the transverse supports (32) comprise flange plates (33 ); the flange plate (33) on the longitudinal support (31) is provided at the top and/or bottom of the longitudinal support (31); the flange plate (33) on the transverse support (32) 33) is provided at the top and/or bottom of the transverse support (32). 13. A lattice pavement structure according to any one of claims 1 to 10, characterized in that the longitudinal support (31) is provided with ventilation holes (321) for ventilation. 14. A lattice pavement structure according to any one of claims 1 to 10, characterized in that a leveling layer is provided between the steel lattice structure (3) and the base layer (1) (5). 15. A pavement structure repair method, characterized in that it is applied to a lattice pavement structure as claimed in any one of claims 2 to 6, and includes the following steps: A. Inject grouting into the corresponding vertical grouting pipe (42) at the empty position through the horizontal conveying pipe (41) until the predetermined grouting requirement is reached. 16. A pavement structure repair method according to claim 15, characterized in that when the lattice pavement structure also includes a grouting control short pipe (43), step A includes the following steps: A1. Move the grouting control short pipe (43) along the horizontal conveying pipe (41) to the vertical grouting pipe (42) corresponding to the emptying position, and make the grouting outlet (432) Align with the vertical grouting pipe (42); A2. Fix the position of the grouting control short pipe (43); inject grouting into the grouting inlet (433) until the predetermined grouting requirement; A3. Release the fixation of the grouting control short pipe (43); move the grouting control short pipe (43) out of the horizontal conveying pipe (41). 17. A construction method of a pavement structure, characterized in that it is applied to a lattice pavement structure as claimed in any one of claims 1 to 14, and includes the following steps: S1. Prefabricated steel lattice structure (3); the width of the steel lattice structure (3) matches the width of the road; the length of the steel lattice structure (3) is less than the length of the road; prefabricated corresponding traffic lane slabs (2) ;Connect the steel lattice structure (3) and the traffic lane slab (2); S2. Arrange the steel lattice structure (3) and the traffic lane plate (2) continuously along the road longitudinal direction; connect the two adjacent steel lattice structures (3); Wet joints are poured between the slabs (2). 18. The construction method of a pavement structure according to claim 17, characterized in that step S1 also includes the following steps: S1-1. Set a rubber water-stop strip on the top surface of the steel lattice structure (3); apply epoxy mortar between the steel lattice structure (3) and the traffic lane slab (2).